<!--template下只能有一个节点-->
<template>
  <a-layout>
    <a-layout-sider width="200" style="background: #fff">
      <a-menu
          mode="inline"
          :style="{ height: '100%', borderRight: 0 }"
          @click="handleClick"
      >
        <a-menu-item key="welcome">
          <MailOutlined/>
          <span>欢迎</span>
        </a-menu-item>
        <a-sub-menu v-for="item in level1" :key="item.id">
          <!--一级菜单-->
          <template v-slot:title>
            <span><user-outlined/>{{ item.name }}</span>
          </template>
          <!--二级菜单-->
          <a-menu-item v-for="child in item.children" :key="child.id">
            <MailOutLined/>
            <span>{{ child.name }}</span>
          </a-menu-item>
        </a-sub-menu>
      </a-menu>
    </a-layout-sider>
    <a-layout-content
        :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }"
    >
      <!--欢迎页面-->
      <div class="welcome " v-show="isShowWelcome">
        <h1>欢迎使用GoldDragon知识库</h1>
      </div>

      <!--电子书列表-->
      <a-list item-layout="vertical" size="large" :grid="{ gutter: 20, column:3 }"
              :data-source="ebooks" v-show="!isShowWelcome">
        <template #renderItem="{ item }">
          <a-list-item key="item.name">
            <!--三个小图标-->
            <template #actions>
              <span v-for="{ type, text } in actions" :key="type">
                <component v-bind:is="type" style="margin-right: 8px" />
                {{ text }}
              </span>
            </template>

            <a-list-item-meta :description="item.description">
              <template #title>
                <a :href="item.href">{{ item.name }}</a>
              </template>
              <!--封面-->
              <template #avatar><a-avatar :src="item.cover" /></template>
            </a-list-item-meta>
          </a-list-item>
        </template>
      </a-list>
    </a-layout-content>
  </a-layout>
</template>

<script lang="ts">
import { defineComponent,onMounted,ref,reactive,toRef} from 'vue';
import axios from 'axios';
import {Tool} from "@/util/tool";
import {message} from "ant-design-vue";

// const listData: Record<string, string>[] = [];
// //为listData做一个初始化，push进24条数据
// for (let i = 0; i < 23; i++) {
//   listData.push({
//     href: 'https://www.antdv.com/',
//     title: `ant design vue part ${i}`,
//     avatar: 'https://zos.alipayobjects.com/rmsportal/ODTLcjxAfvqbxHnVXCYX.png',
//     description:
//         'Ant Design, a design language for background applications, is refined by Ant UED Team.',
//     content:
//         'We supply a series of design principles, practical patterns and high quality design resources (Sketch and Axure), to help people create their product prototypes beautifully and efficiently.',
//   });
// }

export default defineComponent({
  name: 'Home',
  //setup执行时界面还没有渲染出来，此时操作界面元素会报错
  //setup中放一些参数定义，方法定义
  setup(){
    /**
     * 响应式数据：在js中动态修改这里的值，需要实时反馈到页面上
     * ref可以将ebooks变成一个响应式的数据
     */
    const ebooks=ref();
    //reactive中一般放对象
    const ebooks1=reactive({books:[]});

    /**
     * 分类数据查询
     */
    const level1 = ref();
    let categorys: any;
    const handleQueryCategory = () => {
      axios.get("/category/all").then((response) => {
        const data = response.data;
        if (data.success) {
          categorys = data.content;
          level1.value = [];
          level1.value = Tool.array2Tree(categorys, 0);
        } else {
          message.error(data.message);
        }
      });
    };

    const isShowWelcome=ref(true);
    let category2Id=0;

    const handleQueryEbook=()=>{
      axios.get("/ebook/list",{
        params:{
          page:1,
          size:1000,
          category2Id:category2Id,
        }
      }).then(
          (response) =>{
            const data=response.data;
            ebooks.value=data.content.list;
            // ebooks1.books=data.content;
          }
      );
    }

    const handleClick =(value: any) =>{
      // isShowWelcome.value = value.key === 'welcome';
      if(value.key === 'welcome'){
        isShowWelcome.value = true;
      } else {
        category2Id=value.key;
        isShowWelcome.value = false;
        handleQueryEbook();
      }
    }

    //初始化逻辑放入onMounted
    onMounted(()=>{
      handleQueryCategory();
      // handleQueryEbook();
    });

    const actions: Record<string, string>[] = [
      { type: 'StarOutlined', text: '156' },
      { type: 'LikeOutlined', text: '156' },
      { type: 'MessageOutlined', text: '2' },
    ];

    return{
      ebooks,
      // ebooks2:toRef(ebooks1,"books"),
      actions,
      handleQueryCategory,
      level1,
      isShowWelcome,
      handleClick
    }
  }
});
</script>

<!--修改电子书图标为方形-->
<style scoped>
.ant-avatar {
  width: 50px;
  height: 50px;
  line-height: 50px;
  border-radius: 8%;
  margin: 5px 0;
}
</style>